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The field descent method.

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The field descent method.

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Title: The field descent method.
Author: Bernhard, Schmidt.; Ka, Hin Leung.
Copyright year: 2005
Abstract: We obtain a broadly applicable decomposition of group ring elements into a "subfield part" and a "kernel part". Applications include the verification of Lander's conjecture for all difference sets whose order is a power of a prime >3 and for all McFarland, Spence and Chen/Davis/Jedwab difference sets. We obtain a new general exponent bound for difference sets. We show that there is no circulant Hadamard matrix of order v with 4<v<548, 964, 900 and no Barker sequence of length l with 13 < l < 10^22.
Subject: DRNTU::Science::Mathematics::Discrete mathematics::Combinatorics.
Type: Journal Article
Series/ Journal Title: Journal of designs codes and cryptography
School: School of Physical and Mathematical Sciences
Rights: Designs, codes and cryptography © copyright 2005 Springer Netherlands. The journal's website is located at http://www.springerlink.com/content/lwt1482721p60t1j.
Version: Accepted version

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